Abstract:
The invention relates to a drilling system, particularly for two assemblies on which the system is mounted. The system enables the drilling of holes through an overlap area, carried out by means of a drilling tool extending through a locking aperture (31) provided on a tool stand (30) of the drilling system, the drilling tool including a bearing mandrel (51) and an expandable ring (56) closely fitting the mandrel along a tapered contact surface (53). According to the invention, a relative movement is applied between the expandable ring and the mandrel so as to cause, after locking the ring into the locking aperture, a movement of the bearing mandrel against the overlap area, through the locking aperture, and in the direction of said overlap area so as to exert pressure on the latter by moving said drilling tool relative to said tool stand via a slide connection.
Abstract:
The frame of a machine tool forms a closed force loop design that surrounds a workzone containing the spindle head. The X and Y-axis drive motors are mounted on stationary elements of the machine. The Y-axis column is fixed, and supports a Z-axis ram. The mounting and positioning of the Z-axis ram minimizes the change in droop and the effects of acceleration forces on the Z-axis structure. The X, Y, and Z-axis drive motors are all mounted outside of the workzone to shield them from contamination and debris generating during the machining process, and for ease of maintenance.
Abstract:
The invention relates to an apparatus for moving an Iron Roughneck into position to allow making-up or breaking-out of threaded joints in a drill string. The apparatus may also be used to move other drilling equipment into position on the centerline of the well or at mouse holes. A self-balanced, dual synchronized parallelogram arm is utilized to accomplish the movement of the devices. Hydraulic or pneumatic cylinders are used for extension and retraction of the arm rather than to support the tool. The arm may hold the tool in any position without cylinder assistance. The linkage in the synchronized parallelogram may be accomplished by gears, links, slots, or rollers.
Abstract:
Plural spaced actuators (46, 56) mounted along a first axis are used to control machine tool (14) motion along the first axis. The plural actuators (46, 56) are used in synchronism to create linear motion of the machine tool (14) and the tool tip (62) mounted on the machine tool (14) along the first axis. The plural actuators (46, 56) are used differentially to create angular motion of the tool tip (62) about an axis which is orthogonal to the first axis in order to correct angular errors in the axis of the tool (61).
Abstract:
The invention concerns a machine tool for the cutting process of work pieces, having at least one horizontally lodged work spindle, preferably for high speed and/or high precision processing. Said work spindle displaces on and /or inside a frame-like tool carrier vertically placed on a machine support having slides moving along x-, y- and z-axes. According to the invention, the frame-like tool carrier (3) has an associated frame-like work piece holder (2), which is also placed vertically on the machine support (1). The work piece holder (2) and the tool carrier (3) are interconnected as one single stable unit by one or several connecting means (8) in the area of their upper horizontal traverse (4, 6)
Abstract:
The valve seat and guide machine comprises a base structure (102) which supports a pantograph (110, 112, 114, 116) having a major arm and minor arm which moves slidably with respect to the major arm. A spherical head (118) is supported by a number of sphere seats (142, 144) attached to the pantograph arm so that the spherical head can pivot around its centerpoint. A stepper motor (152) provides small z-axis translation of the spindle (150) which is contained in the spherical head and has a cutting bit (156) and a pilot (158) which extend from the bottom of the spherical head (118). A drive motor (138) rotates a transmission linkage (164) which is coupled to the spindle which rotates the cutting bit (156) to cut the valve seat. Small x, y displacements are enabled by moving the entire spherical housing (118) and its supporting sphere seats (142, 144) with respect to the support frame (222). The pantograph provides large z-axis displacement to remove the spindle from the cutting position and to provide clearance for movement to another machine site. A system controller (162) receives feedback from system monitors to control the spindle rotation and translation. Such information can be stored on a removable memory card for repeatable machining. The cylinder (106) head is held in place by a pair of supports which allow the rotation of the cylinder head for easy positioning of the valve guides in the plane of the spherical head and spindle. These supports are moveable from side-to-side to allow the cylinder head to be moved so that successive valve seats may be machined.
Abstract:
The device has a movement unit (3) articulated on a frame (2) via three adjusters (1). When stationary and when the movement unit (3) is travelling, the adjusters (1), which can be pivoted via coupling members (4, 6) in relation to the movement unit (3) and the frame (2), are always under a given tension. Thus the movement unit (3) is highly statically and dynamically rigid and moves linearly as there is no return clearance in the coupling members (4, 6).
Abstract:
The frame of a machine tool forms a closed force loop design that surrounds a workzone containing the spindle head. The X and Y-axis drive motors are mounted on stationary elements of the machine. The Y-axis column is fixed, and supports a Z-axis ram. The mounting and positioning of the Z-axis ram minimizes the change in droop and the effects of acceleration forces on the Z-axis structure. The X, Y, and Z-axis drive motors are all mounted outside of the workzone to shield them from contamination and debris generating during the machining process, and for ease of maintenance.
Abstract:
A drill assembly has a drill column (24) formed from a composite material. A track for a wall saw or for supporting other structures for movement along the track is formed from a composite material. A composite column (44), rail, or other longtitudinally extending composite structure having a hollow interior portion includes an internal support structure (66, 68).